Vibratory circuit-controller



PATENTED JAN. 19, 1904.

R. VARLBY'. VIBRATORY 01mm CONTROLLER.

APPLICATION FILED 0OT.19,1903.

IO IODEL.

llllllllllllrllllll llll 35 1; alike (Maw NORRIS PETER O T W 5 GT 0 UNITED STATES Patented January 19, 1904.

PATENT OFFICE.

RICHARD VARLEY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO VARLEY DUPLEX MAGNET COMPANY, A CORPORATION OF NEIV JERSEY.

VIBRATORY CIRCUIT-CONTROLLER.

IFI I N forming part of Letters Patent No. 750,041, da e Jan a y 19, 1904.

Application filed October 19, 1908. Serial No. 177,520. (No model.)

To all whom it may concern:

Be it known that I, RICHARD VARLEY, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and'useful Improvements in Vibratory Circuit-Controllers, of which the following is a full, clear, and exact description.

This invention relates to vibratory circuitcontrollers applicable to induction-coils, electric bells, reeds, and similar devices, the primary object being to provide a vibrator that will interrupt the circuit with greater rapidity than is indicated by the rate of vibration. I have provided a device in which at each toand-fro excursion of the vibratory element the circuit is opened and closed twice, whereas in the ordinary vibrator the circuit is opened once and closed once only.

Referring to the accompanying drawings, Figure 1 is a sectional view with parts in elevation of my improved circuit-controller, and Fig. 2 is a plan.

The vibratile element is indicated at A and consists of an ordinary armature-lever pivoted at c and provided with a soft-iron armature a, which faces up the end of the core of an induction-coil or electromagnet. (Indicated in dotted lines.) On the back of the lever there is a platinum contact-piece b.

c is a frame or bridge in which there is threaded a thumb-screw (Z, having a shank of large diameter in which there is an axial chamber. In this chamber there is a plunger a, carrying a pin c on its forward end, which projects through a hole in the end of the screw and normally bears against the contact 7), forming a complementary contact therefor and serving as the back-stop for the lever. The outer surface of the head of the thumb-screw is covered by a disk of hard rubber or other suitable insulating material, through the center of which the rear end of the plunger 0 projects. The plunger has a metallic disk-like head 0 the under face of which has a platinum surface 0 for contact purposes. The insulating-disk f supports two platinum-faced brass strips f and f arranged at diametrically opposite points and extending under the head of the plunger to form an opposing contact for the plunger-head. Fixed to the outer end of the plunger is an insulating-button 0', upon which rests the end of a spring 9, having a tendency to force the plunger inward. 7a is another spring of lighter tension than spring g and bearing against the front side of armature-lever A to normally hold said lever against the end of the plunger. Thus the two springs act in opposition to each other upon the plunger; but as spring 9 is stronger than spring it the contact-points between the end of the plunger and the armature, as well as those be tween the head of the plunger and the plates f and f, will be normally closed.

, The two platesf andf' are electrically connected together, as indicated, by the wire 7'. The circuit will be understood to be through the primary of the induction-coil or through any other magnet-coil the circuit of which is to be interrupted, thence to the wire i. thence through the contacts f, f and e to the plunger, thence across contacts 0' and I) to the armature-lever, the two sets of contacts thus being in series.

The operation is as follows: The circuit just traced is normally closed. IVhen the current is turned on, the magnet being energized the armature is attracted and armature-lever A moved forward, thus breaking the circuit at the points 0' b. The magnet being deenergized the armature-lever returns under the action of spring h. In this movement the armature gathers considerable momentum and in striking contact c the circuit is for the instant again closed; but the momentum of the lever is communicated to the plunger 0 and the circuit again opened between contacts (2 and f j, whereupon the momentum being consumed the stronger spring g asserts itself and returns the plunger to again complete the circuit at c and f f. The magnet then acts as before and the operation is repeated and continued. It will thus be seen that upon the forward stroke of the armature the circuit was opened once and on the rearward stroke the circuit was closed, opened, and again closed, thus affording two breaks and two closures on each to-and-fro excursion of the armature-lever and doubling the number of interruptions of the circuit aiforded by the ordinary types of vibrating circuit-controllers.

It is obvious that a single contact may be substituted for the two contacts f and 7 but I prefer the double arrangement, since it affords certainty of action notwithstanding any rocking of the plunger due to a loose fit in its socket.

The relative-tension of both springs can be adjusted at once and uniformly by turning the thumb-screw, since an axial motion thereof inward or outward will increase the tension of one spring and decrease that of the other equally.

Having described my invention, I claim- 1. In a vibrating circuit-controller, the combination with the vibratile element, of means cooperating therewith for opening and closing the circuit successively more than once during each to-and-fro excursion of the vibratile element.

2. In a vibrating circuit-controller, the combination with a vibratile element of means cooperating therewith for opening the circuit twice during each to-and-fro excursion of the vibratile element.

3. In a vibrating circuit-controller,the combination with a vibratile element of means cooperating therewith for successively opening and closing the circuit twice during each toand-fro excursion of the vibratile element.

4:. In a vibrating circuit-controller,two sets of contacts arranged in series with each other, in combination with a vibrating element adapted to close one set and open the other on its stroke in one direction.

5. In a vibrating circuit-controller,the combination with a vibratory element, of two pairs of contacts and means whereby the momentum of the vibratory element on its back stroke will cause it to first close one pair of I contacts and then open the other.

6. In a vibrating circuit-controller,the combination with a vibratory element, of two pairs of contacts, means whereby the momentum of the vibratory element of its back stroke will cause it to first close one pair of contacts and then open the other and means for thereafter closing the opened pair, substantially as described.

7. In a vibrating circuit-controller,two pairs of contacts,a spring tending to hold both pairs closed and a vibratile element adapted on its stroke in one direction to open one pair of contacts and on its stroke in the other direction to close the open pair and open the other pair of contacts.

8. In avibratingcircuit-controller,the combination with a vibratile element, of a movable back-stop therefor and a pair of contacts controlled by the motions of the back-stop.

9. In a vibrating circuit-controller,the combination with a vibratory element, of a spring for retracting the same, a movable back-stop, a pair of contacts adapted to be opened by the movement of the back-stop and another spring for closing said contacts, substantially as described.

10. In a vibrating circuit-controller, the combination with a vibrating element, of a plunger acting as a back-stop therefor,a spring tending to hold said element againstits backstop, a pair of contacts controlled by the plunger and a spring stronger than the first-mentioned spring and tending to hold said contacts closed.

11. In a vibrating circuit-controllcr, the combination with a vibrating element of a thumb-screw having an axial chamber, a plunger therein making electric contact at its inner end with said vibratile element and at its outer end with the head of the thumb-screw, a spring tending to hold the inner contacts closed and the outer contacts open, and a stronger spring tending to hold the outer contacts closed, substantiall y as described.

In witness whereof I subscribe my signature I in presence of two witnesses.

RICHARD VARLEY.

\Vitnesses:

M. M. CROSWELL, IVILLETT CIIADwIoK. 

